Python ctypes.pythonapi() Examples
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Example #1
Source File: test_android.py From chaquopy with MIT License | 6 votes |
def test_ctypes(self): from ctypes.util import find_library libc = ctypes.CDLL(find_library("c")) liblog = ctypes.CDLL(find_library("log")) self.assertIsNone(find_library("nonexistent")) # Work around double-underscore mangling of __android_log_write. def assertHasSymbol(dll, name): self.assertIsNotNone(getattr(dll, name)) def assertNotHasSymbol(dll, name): with self.assertRaises(AttributeError): getattr(dll, name) assertHasSymbol(libc, "printf") assertHasSymbol(liblog, "__android_log_write") assertNotHasSymbol(libc, "__android_log_write") # Global search (https://bugs.python.org/issue34592): only works on newer API levels. if API_LEVEL >= 21: main = ctypes.CDLL(None) assertHasSymbol(main, "printf") assertHasSymbol(main, "__android_log_write") assertNotHasSymbol(main, "nonexistent") assertHasSymbol(ctypes.pythonapi, "PyObject_Str")
Example #2
Source File: bgl_ext.py From addon_common with GNU General Public License v3.0 | 6 votes |
def np_array_as_bgl_Buffer(array): type = array.dtype if type == np.int8: type = bgl.GL_BYTE elif type == np.int16: type = bgl.GL_SHORT elif type == np.int32: type = bgl.GL_INT elif type == np.float32: type = bgl.GL_FLOAT elif type == np.float64: type = bgl.GL_DOUBLE else: raise _decref = ctypes.pythonapi.Py_DecRef _incref = ctypes.pythonapi.Py_IncRef _decref.argtypes = _incref.argtypes = [ctypes.py_object] _decref.restype = _incref.restype = None buf = bgl.Buffer(bgl.GL_BYTE, (1, *array.shape))[0] c_buf = C_Buffer.from_address(id(buf)) _decref(c_buf.parent) _incref(array) c_buf.parent = array # Prevents MEM_freeN c_buf.type = type c_buf.buf = array.ctypes.data return buf
Example #3
Source File: request_state_test.py From browserscope with Apache License 2.0 | 5 votes |
def setUp(self): self.mox = mox.Mox() self.mox.StubOutWithMock(ctypes.pythonapi, 'PyThreadState_SetAsyncExc') self.request_state = request_state.RequestState('id')
Example #4
Source File: request_state_test.py From browserscope with Apache License 2.0 | 5 votes |
def test_inject_exception(self): ctypes.pythonapi.PyThreadState_SetAsyncExc( CtypesComparator(ctypes.c_long(threading.current_thread().ident)), CtypesComparator(ctypes.py_object(Exception))) self.mox.ReplayAll() self.request_state.inject_exception(Exception) self.mox.VerifyAll()
Example #5
Source File: container.py From benchexec with Apache License 2.0 | 5 votes |
def _python_clone_child_callback(func_p): """Used as callback for clone, calls the passed function pointer.""" # Strictly speaking, PyOS_AfterFork_Child should be called immediately after # clone calls our callback before executing any Python code because the # interpreter state is inconsistent, but here we are already in the Python # world, so it could be too late. For more information cf. execute_in_namespace() # and https://github.com/sosy-lab/benchexec/issues/435. # Thus we use this function only as fallback of architectures where we have no # native callback. For benchexec we combine it with the sys.setswitchinterval() # workaround in localexecution.py. Other users of ContainerExecutor should be safe # as long as they do not use many threads. We cannot do anything before cloning # because it might be too late anyway (gil_drop_request could be set already). ctypes.pythonapi.PyOS_AfterFork_Child() return _CLONE_NESTED_CALLBACK(func_p)()
Example #6
Source File: inputhook.py From Computable with MIT License | 5 votes |
def get_pyos_inputhook(self): """Return the current PyOS_InputHook as a ctypes.c_void_p.""" return ctypes.c_void_p.in_dll(ctypes.pythonapi,"PyOS_InputHook")
Example #7
Source File: inputhook.py From Computable with MIT License | 5 votes |
def get_pyos_inputhook_as_func(self): """Return the current PyOS_InputHook as a ctypes.PYFUNCYPE.""" return self.PYFUNC.in_dll(ctypes.pythonapi,"PyOS_InputHook")
Example #8
Source File: collector_hypervisor.py From opsbro with MIT License | 5 votes |
def __del__(self): if is_windows: self.win.VirtualFree(self.addr, 0, 0x8000) elif ctypes.pythonapi: # Seems to throw exception when the program ends and # pythonapi is cleaned up before the object? ctypes.pythonapi.free.restype = None ctypes.pythonapi.free.argtypes = [c_void_p] ctypes.pythonapi.free(self.addr)
Example #9
Source File: request_state_test.py From python-compat-runtime with Apache License 2.0 | 5 votes |
def setUp(self): self.mox = mox.Mox() self.mox.StubOutWithMock(ctypes.pythonapi, 'PyThreadState_SetAsyncExc') self.request_state = request_state.RequestState('id')
Example #10
Source File: request_state_test.py From python-compat-runtime with Apache License 2.0 | 5 votes |
def test_inject_exception(self): ctypes.pythonapi.PyThreadState_SetAsyncExc( CtypesComparator(ctypes.c_long(threading.current_thread().ident)), CtypesComparator(ctypes.py_object(Exception))) self.mox.ReplayAll() self.request_state.inject_exception(Exception) self.mox.VerifyAll()
Example #11
Source File: rlwrap.py From aioconsole with GNU General Public License v3.0 | 5 votes |
def input(prompt="", use_stderr=False): # Use readline if possible try: import readline # noqa except ImportError: return builtins.input(prompt) # Use stdout if not use_stderr: return builtins.input(prompt) api = ctypes.pythonapi # Cross-platform compatibility if compat.platform == "darwin": stdin = "__stdinp" stderr = "__stderrp" else: stdin = "stdin" stderr = "stderr" # Get standard streams try: fin = ctypes.c_void_p.in_dll(api, stdin) ferr = ctypes.c_void_p.in_dll(api, stderr) # Cygwin fallback except ValueError: return builtins.input(prompt) # Call readline call_readline = api.PyOS_Readline call_readline.restype = ctypes.c_char_p result = call_readline(fin, ferr, prompt.encode()) # Decode result if len(result) == 0: raise EOFError return result.decode().rstrip("\n")
Example #12
Source File: _tblib.py From satori with Apache License 2.0 | 4 votes |
def _init_ugly_crap(): """This function implements a few ugly things so that we can patch the traceback objects. The function returned allows resetting `tb_next` on any python traceback object. Do not attempt to use this on non cpython interpreters """ import ctypes from types import TracebackType # figure out side of _Py_ssize_t if hasattr(ctypes.pythonapi, 'Py_InitModule4_64'): _Py_ssize_t = ctypes.c_int64 else: _Py_ssize_t = ctypes.c_int # regular python class _PyObject(ctypes.Structure): pass _PyObject._fields_ = [ ('ob_refcnt', _Py_ssize_t), ('ob_type', ctypes.POINTER(_PyObject)) ] # python with trace if hasattr(sys, 'getobjects'): class _PyObject(ctypes.Structure): pass _PyObject._fields_ = [ ('_ob_next', ctypes.POINTER(_PyObject)), ('_ob_prev', ctypes.POINTER(_PyObject)), ('ob_refcnt', _Py_ssize_t), ('ob_type', ctypes.POINTER(_PyObject)) ] class _Traceback(_PyObject): pass _Traceback._fields_ = [ ('tb_next', ctypes.POINTER(_Traceback)), ('tb_frame', ctypes.POINTER(_PyObject)), ('tb_lasti', ctypes.c_int), ('tb_lineno', ctypes.c_int) ] def tb_set_next(tb, next): """Set the tb_next attribute of a traceback object.""" if not (isinstance(tb, TracebackType) and (next is None or isinstance(next, TracebackType))): raise TypeError('tb_set_next arguments must be traceback objects') obj = _Traceback.from_address(id(tb)) if tb.tb_next is not None: old = _Traceback.from_address(id(tb.tb_next)) old.ob_refcnt -= 1 if next is None: obj.tb_next = ctypes.POINTER(_Traceback)() else: next = _Traceback.from_address(id(next)) next.ob_refcnt += 1 obj.tb_next = ctypes.pointer(next) return tb_set_next
Example #13
Source File: collector_hypervisor.py From opsbro with MIT License | 4 votes |
def __init__(self): if platform.machine() not in ("AMD64", "x86_64", "x86", "i686"): raise SystemError("Only available for x86") if is_windows: if is_64bit: # VirtualAlloc seems to fail under some weird # circumstances when ctypes.windll.kernel32 is # used under 64 bit Python. CDLL fixes this. self.win = ctypes.CDLL("kernel32.dll") opc = _WINDOWS_64_OPC else: # Here ctypes.windll.kernel32 is needed to get the # right DLL. Otherwise it will fail when running # 32 bit Python on 64 bit Windows. self.win = ctypes.windll.kernel32 opc = _CDECL_32_OPC else: opc = _POSIX_64_OPC if is_64bit else _CDECL_32_OPC size = len(opc) code = (ctypes.c_ubyte * size)(*opc) self.r = CPUID_struct() if is_windows: self.addr = self.win.VirtualAlloc(None, size, 0x1000, 0x40) if not self.addr: raise MemoryError("Could not allocate RWX memory") else: ctypes.pythonapi.valloc.restype = ctypes.c_void_p ctypes.pythonapi.valloc.argtypes = [ctypes.c_size_t] self.addr = ctypes.pythonapi.valloc(size) if not self.addr: raise MemoryError("Could not allocate memory") ctypes.pythonapi.mprotect.restype = c_int ctypes.pythonapi.mprotect.argtypes = [c_void_p, c_size_t, c_int] ret = ctypes.pythonapi.mprotect(self.addr, size, 1 | 2 | 4) if ret != 0: raise OSError("Failed to set RWX") ctypes.memmove(self.addr, code, size) func_type = CFUNCTYPE(None, POINTER(CPUID_struct), c_uint32) self.func_ptr = func_type(self.addr)
Example #14
Source File: _tblib.py From PokemonGo-DesktopMap with MIT License | 4 votes |
def _init_ugly_crap(): """This function implements a few ugly things so that we can patch the traceback objects. The function returned allows resetting `tb_next` on any python traceback object. Do not attempt to use this on non cpython interpreters """ import ctypes from types import TracebackType # figure out side of _Py_ssize_t if hasattr(ctypes.pythonapi, 'Py_InitModule4_64'): _Py_ssize_t = ctypes.c_int64 else: _Py_ssize_t = ctypes.c_int # regular python class _PyObject(ctypes.Structure): pass _PyObject._fields_ = [ ('ob_refcnt', _Py_ssize_t), ('ob_type', ctypes.POINTER(_PyObject)) ] # python with trace if hasattr(sys, 'getobjects'): class _PyObject(ctypes.Structure): pass _PyObject._fields_ = [ ('_ob_next', ctypes.POINTER(_PyObject)), ('_ob_prev', ctypes.POINTER(_PyObject)), ('ob_refcnt', _Py_ssize_t), ('ob_type', ctypes.POINTER(_PyObject)) ] class _Traceback(_PyObject): pass _Traceback._fields_ = [ ('tb_next', ctypes.POINTER(_Traceback)), ('tb_frame', ctypes.POINTER(_PyObject)), ('tb_lasti', ctypes.c_int), ('tb_lineno', ctypes.c_int) ] def tb_set_next(tb, next): """Set the tb_next attribute of a traceback object.""" if not (isinstance(tb, TracebackType) and (next is None or isinstance(next, TracebackType))): raise TypeError('tb_set_next arguments must be traceback objects') obj = _Traceback.from_address(id(tb)) if tb.tb_next is not None: old = _Traceback.from_address(id(tb.tb_next)) old.ob_refcnt -= 1 if next is None: obj.tb_next = ctypes.POINTER(_Traceback)() else: next = _Traceback.from_address(id(next)) next.ob_refcnt += 1 obj.tb_next = ctypes.pointer(next) return tb_set_next
Example #15
Source File: _tblib.py From PokemonGo-DesktopMap with MIT License | 4 votes |
def _init_ugly_crap(): """This function implements a few ugly things so that we can patch the traceback objects. The function returned allows resetting `tb_next` on any python traceback object. Do not attempt to use this on non cpython interpreters """ import ctypes from types import TracebackType # figure out side of _Py_ssize_t if hasattr(ctypes.pythonapi, 'Py_InitModule4_64'): _Py_ssize_t = ctypes.c_int64 else: _Py_ssize_t = ctypes.c_int # regular python class _PyObject(ctypes.Structure): pass _PyObject._fields_ = [ ('ob_refcnt', _Py_ssize_t), ('ob_type', ctypes.POINTER(_PyObject)) ] # python with trace if hasattr(sys, 'getobjects'): class _PyObject(ctypes.Structure): pass _PyObject._fields_ = [ ('_ob_next', ctypes.POINTER(_PyObject)), ('_ob_prev', ctypes.POINTER(_PyObject)), ('ob_refcnt', _Py_ssize_t), ('ob_type', ctypes.POINTER(_PyObject)) ] class _Traceback(_PyObject): pass _Traceback._fields_ = [ ('tb_next', ctypes.POINTER(_Traceback)), ('tb_frame', ctypes.POINTER(_PyObject)), ('tb_lasti', ctypes.c_int), ('tb_lineno', ctypes.c_int) ] def tb_set_next(tb, next): """Set the tb_next attribute of a traceback object.""" if not (isinstance(tb, TracebackType) and (next is None or isinstance(next, TracebackType))): raise TypeError('tb_set_next arguments must be traceback objects') obj = _Traceback.from_address(id(tb)) if tb.tb_next is not None: old = _Traceback.from_address(id(tb.tb_next)) old.ob_refcnt -= 1 if next is None: obj.tb_next = ctypes.POINTER(_Traceback)() else: next = _Traceback.from_address(id(next)) next.ob_refcnt += 1 obj.tb_next = ctypes.pointer(next) return tb_set_next